Experion, Scarlett, and Calderan Naming Conventions
So according to Experion's wiki, his name may be based off of the Marvel character Hyperion, who was named after a Greek Titan, god of the sun/skies. "Hyper" means "over, above" and "ion" is a form of the verb "to go"--literally, the name means "he who walks above". And Experion's name is a version of that which almost sounds like it could mean something, but it doesn't. (Even the roots are jumbled up, Latin "ex" [to go out of] and "per" [to go through] mixed with Greek "ion".)
From the beginning, Experion's name seemed odd to me. As far as we know, Skylar's hero name is her real name, and it's a somewhat normal name. But Experion doesnt really sound like something you'd name your kid. Yet Skylar calls him Experion and they're close friends, so it must be his real name.
Then it clicked. In an episode of Mighty Med, Skylar says that the most popular name on her planet is [alien sounds I will not attempt to replicate] (this name is somewhat similar to Kakai-rata's name, which leads me to believe that these pets are extremely numerous and so the name is very common). Then she says the second most popular name is Emily.
We know that A) all female Calderans look like Skylar, which means it's possible that all male Calderans look like Experion, and that B) the only other named female Calderan is named Scarlett. So it's also possible that all female Calderan's names start with S, and in turn, that all male Calderan's names start with E.
It's a stretch, but what if Experion's "real" name is Emily, and he chose to go by Experion because Emily is such a common name on Caldera? (And if that doesn't convince you: Emily is derived from the Roman surname Aemilius, which is in turn derived from Latin "aemulus" [rival] and the Greek "aimylos" [wily, persuasive].)